InterviewSolution
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InterviewSolution
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Assertion: As per carbonic acid exchange theory of mineral salt absorption, `CO_(2)` released during respiration of roots forms `H_(2)SO_(3)` dissociates into `H^(+)` and `HCO_(3)` ions, where `H^(+)` ions exchange with anions adsorbed on clay particles.A. If both assertio and reason are true and reason is the correct explanation of assertionB. if both assertion and reason are true but reason is not the correct explanation of assertionC. if assertion is true but reason is falseD. if both assertion and reason are false |
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Answer» Correct Answer - C According to carbonic acid exchange theory, `CO_(2)` released during respiration of roots combines with soil water to produce carbonic acid `(H_(2)CO_(3))`. Carbonic acid dissociates into `H^(+)` and `HCO_(3)^(-)` ions in soil solution. These `H^(+)` ions may be exchanged for cations adsorbed on clay particles. the cations thsu released into soil solution from the clay particles, may be adsorbed on root cells in exchanges for `H^(+)` ions. |
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